The House's 106-95 vote Tuesday was a test of support for the Republican-sponsored measure that's backed by Gov. Tom Corbett. The proposal would raise gasoline taxes and numerous motorist fees to spend billions on roads, bridges and mass transit systems.

House Speaker Sam Smith says some lawmakers may have changed their votes after getting PennDOT's commitment to address a project in their district sooner. Rep. Seth Grove says he changed his mind because leaders said they'd make changes to lower Pennsylvania Turnpike debt faster.

It's a top priority of Senate leaders, and Senate Majority Leader Dominic Pileggi's office says it appears close to what an overwhelming Senate majority approved in June.